

public class Market {
    String name;
    String site;
    MarketUser mk=new MarketUser();
    public void xinyonhu(String card, String username, String telephone, int grade){
        mk.name(card, username, telephone, grade);
    }
    public void jiafen(String card, int num){
        mk.inc(card, num);
    }
    public void duihuan(String card, int num){
        System.out.println(mk.duihuan(card, num));
    }
}
